Oneok to expand Williston basin gas processing, transportation

Oneok Partners LP plans to build a 100-MMcfd natural gas processing plant, Garden Creek III, and related infrastructure in eastern McKenzie County, ND, in the Williston basin. The company also will build a 95-mile NGL pipeline between existing fractionation systems at Hutchinson, Kan., and Medford, Okla., and modify the Hutchinson site to accommodate lighter, unfractionated NGLs produced in the Williston basin.

Oneok expects the Garden Creek III gas processing plant, including expansions and upgrades to existing gathering systems and compression, to enter service in first-quarter 2015. Oneok will build Garden Creek III near its Garden Creek I gas processing plant and the announced 100-MMcfd Garden Creek II gas processing plant, which is expected to be in service in third-quarter 2014 (OGJ Online, July 27, 2012). The Garden Creek III project will cost $325-360 million.

The partnership's expects its previously announced Stateline II gas processing plant to be in service later this quarter. The combined natural gas processing capacities of the Garden Creek II and III plants, and Stateline II, will bring Oneok’s Williston basin total to 590 MMcfd, including its Garden Creek, Stateline I, and Grasslands plants.

Oneok also will invest $140 million to build a 95-mile NGL pipeline connecting its NGL fractionation and storage in Hutchinson, Kan., to similar facilities in Medford, Okla. These investments include modification of the Hutchinson fractionator and are expected to enter service in first-quarter 2015.

Contact Christopher E. Smith at chriss@ogjonline.com.

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